They're enabling a lot of people to do something they couldn't do otherwise. And they've convinced those people to give them money to do it for them. The most core form of a specialised business.

76k mrr with some contractors, this guy is printing money and I'm very jealous.

Unfortunately, making a lot of money with software and the technical complexity of said software are weakly correlated.

Or maybe it's a good thing because it means a stupid simple idea can make you a millionaire